Balloon CER123

https://youtu.be/iV3NXFkdUyw?t=21s
What will happen if she lets go of the untied-balloon?
Balloon CER123.png
Write a CER123.

Hint:
CER123 Diagram
End..............................................................................................................................

Balloon Reasoning BW
1 According to the action-reaction law, if one object puts a force on a second object, the second object puts a force back on the first.
2 Since the balloon got smaller and moved, the balloon put a force on the air inside it forcing the air out and the air put a force back on the balloon according to the action-reaction law.
3 Therefore the force the air put back on the balloon cause it to move and exhibited the action-reaction law when the balloon was released.